1990 GMC Jimmy Engine Timing Parts

Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″ Roller Diameter “Z” Chain for Reduced Friction. “Z” Chain Approximately 33% Overall Increased Strength Over the Standard High Performance Chain. “Z” Chain Featuring a Press Fit Center Link design that Increases Load Distribution with Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness and Pre-stressed to Increase Fatigue Life. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.

Product Features:

• The complete kits, which meet or exceed OEM performance requirements, ensure a quiet and maintenance-free experience
• Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
• Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides
• Refer to our online catalog for detailed application-specific information
• Keep your engine’s valve train in perfect time with Cloyes, the world leader in timing drive systems.

Product Features:

• Solid Bushing Chain Resists Stretching
• For Use with Stock or Edelbrock Camshafts
• Stressproof Steel Crank Gears
• 3 Keyway Setting Points To Ensure Accurate Timing
• True Bearing Surface Rolls with the Sprockets
• Not for OEM Hydraulic Roller-Lifter Camshaft Eng.

Sprocket Made From High Alloy Material. Features Precision Tooth Form To Assure Proper Chain Engagement, And Is Balanced For Proper Timing.

Product Features:

• Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
• Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
• CAD designed and manufactured using premium materials
• Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
• Refer to our online catalog for detailed application-specific information

Product Features:

• Precision Gear Drive System
• Accurate Timing Control
• No Chain To Stretch
• Smooth Cam Rotation For Precise Valve Timing
• Accurate and Multiple Cam Timing Settings
• Compatible With All Standard Camshafts

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Design type: spring loaded; single-lip
• Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
• Resistance to EP lubricants
• Low swell in hydrocarbon fluids
• Delivers quality and reliable performance for every type of repair

If you are changing your camshaft or replacing the timing set, make sure to replace this seal at the same time! Metal with Nitrile rubber seal.

Product Features:

• Nitrile Rubber And High Density Cork
• Will Not Shrink Or Stick

Aluminum cam gear, steel crank gear. feature “helical” tooth form for quiet operation, and precision machined bore for true fit. SET INCLUDES: 2524 Engine Timing Camshaft Gear (1 EA), 2537 Engine Timing Crankshaft Gear (1 EA).

Product Features:

• Utilizes the latest in design and technology to offer complete chain sets
• CAD designed and manufactured using premium materials
• Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
• Meet or exceed OEM performance requirements, ensuring a quiet and maintenance-free experience
• Refer to our online catalog for detailed application-specific information

Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.

Product Features:

• Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
• Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
• CAD designed and manufactured using premium materials
• Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
• Refer to our online catalog for detailed application-specific information

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Made of stainless steel
• Designed to prevent timing cover seal leaks
• Takes up gaps caused by worn-out harmonic balancer shafts

The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.

Product Features:

• High-precision and High-quality components used in all KITs
• Coverage of classic and new high-tech solutions for the best system coverage

With the backing of an industry-leading two year or 60,000 mile parts and labor warranty, each Dayco timing chain kit includes top-grade timing chains, precision machined crank sprockets and cam sprockets, tensioners, high-grade plastic guides, seals and VVT solenoids and cam phasers if the application calls for it.

Product Features:

• High quality chains prevent stretch for the life of the kit, addressing the no. 1 replacement issue
• Precision machined sprockets for exact timing
• High-grade plastic guides use same material as OE for excellent wear resistance
• Contains: Camshaft Sprocket, Crankshaft Sprocket, Timing Chain, Chain Tensioner

With the backing of an industry-leading two year or 60,000 mile parts and labor warranty, each Dayco timing chain kit includes top-grade timing chains, precision machined crank sprockets and cam sprockets, tensioners, high-grade plastic guides, seals and VVT solenoids and cam phasers if the application calls for it.

Product Features:

• High quality chains prevent stretch for the life of the kit, addressing the no. 1 replacement issue
• Precision machined sprockets for exact timing
• High-grade plastic guides use same material as OE for excellent wear resistance
• Contains: Camshaft Sprocket, Crankshaft Sprocket, Timing Chain

Timing Chain Kits. Cloyes is leading manufacturer of timing systems products, including a wide range of complete kits for a variety of domestic and foreign nameplates. Leveraging its expertise in timing drive systems, Cloyes utilizes the latest in design and technology to offer complete timing chain kits. The complete kits, which meet or exceed OEM performance requirements, ensure quiet and maintenance-free experience. Cloyes parts are CAD designed and manufactured using advanced materials. Each part is extensively tested for function and durability to ensure optimal performance. Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides. Refer to our online catalog for detailed application-specific information. SET INCLUDES: S836T Engine Timing Camshaft Sprocket (1 EA), 9-5452 Engine Timing Chain Tensioner (1 EA), 9-4190 Engine Timing Chain (1 EA), S835 Engine Timing Crankshaft Sprocket (1 EA).

Product Features:

• Meet or exceed OEM performance requirements, ensuring a quiet and maintenance free experience
• Utilizes the latest in design and technology to offer a complete chain kit solution
• Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance

Machined Aluminum Center Plate; Threaded for Rollerized Cam Button; Grooved for O-Ring Seal; Meets or exceeds OEM performance requirements; Cloyes utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience.

Product Features:

• Machined Aluminum Center Plate
• Threaded for Rollerized Cam Button
• Grooved for O-Ring Seal
• Meets or exceeds OEM performance requirements
• Cloyes utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience.

This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.

Product Features:

• Direct replacement – this engine timing cover matches the fit and function of the original equipment cover
• Durable construction – this part is specifically designed to withstand extreme underhood temperatures for a long service life
• Cost-effective solution – offers original equipment quality at a competitive price
• Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life

This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.

Product Features:

• Direct replacement – this engine timing cover matches the fit and function of the original equipment cover
• Durable construction – this part is specifically designed to withstand extreme underhood temperatures for a long service life
• Cost-effective solution – offers original equipment quality at a competitive price
• Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life

Spectre’s Timing Tab Adjustable Small Block Chevy is a universal timing tab that has an adjustable pointer for accurate readings and works with any size harmonic balancer. Featuring triple chrome plated steel construction, the timing tab fits small block Chevrolet 265-400.

Product Features:

• Chrome plated
• Steel construction
• For any size harmonic balancer
• Designed to fit Chevy small block engines

Bolts on using existing timing cover bolts. It is chrome plated steel, which makes is a better compliment to a chrome timing cover. It also has an adjustable red timing pointer. This allows for better visibility and helps you set your timing more easily. Just loosen the screw, set the pointer to the desired initial timing level, and screw it back down. Then you’ll be able to more clearly see if your timing is where you want it when checking your timing. Has markings from 16 degrees before top dead center (BTDC) to 4 degrees after top dead center (ATDC).

Product Features:

• Bolts on using existing timing cover bolts
• Chrome finish compliments chrome timing covers
• Red adjustable pointer makes it easier to check timing
• Timing marks from 16 degrees BTDC to 4 degrees ATDC

Installs using stock timing cover bolts. Chrome plated steel is a much better compliment to a chromed timing cover.

Product Features:

• Bolts on with existing timing cover bolts
• Chrome plated steel is a much better compliment for chrome timing covers
• Balancer

Installs using stock timing cover bolts. Chrome plated steel is a much better compliment to a chromed timing cover. Has markings from 14 degrees before top dead center (BTDC) to 8 degrees after top dead center (ATDC).

Product Features:

• Bolts on with existing timing cover bolts
• Chrome plated steel is a much better compliment for chrome timing covers
• Markings for 14 degrees BTDC to 8 degrees ATDC

Since 1921, Cloyes has been the trusted leader in automotive timing systems. Our timing chains are built to synchronize crankshaft and camshaft rotation with absolute accuracy, ensuring precise valve timing and long-term engine performance. Available as stand-alone chains or in complete kits, Cloyes timing chains are manufactured from premium materials, heat-treated, pre-stressed and engineered for a perfect chain-to-sprocket tooth fit – delivering quiet operation, durability, and OE-level performance you can count on. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading limited Warranty and technical support.

Product Features:

• Pre-stressed and heat-treated steel construction for increased strength, and wear resistance, delivering long-term durability even in high-stress environments
• Cloyes chains are engineered and manufactured with precision pitch control to ensure optimal chain-to-sprocket fit reducing noise, minimizing fatigue, and maintaining accurate timing
• Designed in the USA and manufactured using premium materials for OE-level fit and function, allowing for smooth installation and reliable performance
• Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
• Available in application-specific kit or as a stand-alone chain, offering installation flexibility and convenience
• Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component

High Performance 3/8″ Pitch Double Roller Replacement TRUE Roller Chain. 0.250″ Roller Diameter. Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness. Pre-stressed to Increase Fatigue Life.

Product Features:

• A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engines valve events for each cylinder
• Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
• From stock replacement to high performance, Cloyes has the most complete timing chain catalog
• Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
• Cloyes recommends the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced as these components play a vital role in system stability and accurate timing
• Refer to our online catalog for detailed application-specific information
• Keep your engines valvetrain in perfect time with Cloyes, the world leader in timing drive systems

Street Performance 3/8″ Pitch Double Roller Replacement True Roller Chain. Seamless 0.250″ Roller Diameter. Heat Treated and Processed Links to Maximize Breaking Strength while Remaining Ductile for Toughness. Prestressed to Increase Fatigue Life. USA Made.

Product Features:

• A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engines valve events for each cylinder
• Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
• From stock replacement to high performance, Cloyes has the most complete timing chain catalog
• Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
• Cloyes recommends the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced as these components play a vital role in system stability and accurate timing
• Refer to our online catalog for detailed application-specific information
• Keep your engines valvetrain in perfect time with Cloyes, the world leader in timing drive systems

ENGINE TIMING CHAIN